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On August 15th, 2025, Steam will officially stop supporting Linux distributions with a version of glibc older than 2.31 (help.steampowered.com)

submitted 1 day ago* (last edited 1 day ago) by [email protected] to c/[email protected]

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To check which version of glibc you have, run ldd --version in the terminal.

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[–] [email protected] 72 points 1 day ago (1 children)

2.31 was released on 2020-02-01.

[–] [email protected] 40 points 1 day ago (1 children)

That's surprisingly new. Wonder what causes the incompatibility

[–] [email protected] 41 points 1 day ago* (last edited 1 day ago) (1 children)

The changelog for 2.31 is here:

https://sourceware.org/legacy-ml/libc-announce/2020/msg00001.html

Latest version of glibc is 2.41, released 2025-01-30. That puts 2.31 at least 10 releases behind. That version is quite outdated. There are numerous security and bug fixes in 2.31 alone, with each newer release also fixing some as well.

[–] [email protected] 38 points 1 day ago

This might be the reason for requiring glibc 2.31 and newer:

Security related changes:

CVE-2019-19126: ld.so failed to ignore the LD_PREFER_MAP_32BIT_EXEC environment variable during program execution after a security transition, allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass ASLR for a setuid program. Reported by Marcin Kościelnicki.